Echocardiography apical 4Ch segmentation: The echocardiography segmentation model performed automated segmentation of the left ventricle blood pool (LVBP) from echocardiography apical 4Ch images. The model was pre-trained using the EchoNet-Dynamic database [1]}, which includes 20,060 echocardiography images with annotations (ED and ES frames). To take into account the inter-vendor differences in intensity distributions, the segmentation model was then fine-tuned using 300 images (multiple time points from 50 echocardiography scans) from the GSTFT HF cohort.
